Effects of extraction of four premolars on vermilion height and lip area in patients with bimaxillary protrusion

European Journal of Orthodontics
Nety TrisnawatyIchiro Takahashi

Abstract

The purpose of this study was to evaluate the effects of orthodontic treatment, involving the extraction of four premolars, on vermilion height and lip area. Twenty-eight female patients (mean 21.9 ± 3.1 years) who were diagnosed with bimaxillary protrusion were selected for this study to be treated by extraction of four premolars. The control group consisted of 28 female volunteers (mean 25.0 ± 3.0 years) with Angle Class I normal occlusion. Frontal photographs of the patients were taken both before and after the orthodontic treatment in resting position. Thirty-five landmarks on the upper and lower lips were identified for the measurements of vermilion height and lip area. Lateral cephalograms were taken before and after active orthodontic treatment, and linear and angular measurements were performed. The mean pre-treatment values of vermilion height and lip area were significantly greater in the treatment group than those of the control group and decreased significantly after the orthodontic treatment towards the values in the control group. There were no significant differences in the vermilion height and lip area between the post-treatment and the control groups, except for lower lip area values. Significant correlations f...Continue Reading

References

Mar 1, 1989·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·O B Drobocky, R J Smith
Apr 1, 1967·American Journal of Orthodontics·C J Burstone
Jun 1, 1982·American Journal of Orthodontics·M D Rains, R Nanda
Aug 1, 1982·American Journal of Orthodontics·B M Oliver
Sep 1, 1993·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·A L FarrowK Azizi
Sep 12, 2001·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·J Kusnoto, H Kusnoto
Aug 7, 2003·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Virgilio F FerrarioClaudia Dellavia
May 13, 2005·Orthodontics & Craniofacial Research·C A EvansD B Giddon
Aug 17, 2005·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Hideki IoiAmy L Counts
Jan 31, 2006·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Javonne McKoy-WhiteDonald B Giddon
Aug 10, 2007·The Angle Orthodontist·Pieter Van der GeldAnne Marie Kuijpers-Jagtman
Feb 27, 2008·The Angle Orthodontist·Chiarella SforzaVirgilio Ferruccio Ferrario
Apr 15, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Laurie McNamaraTiziano Baccetti
Apr 15, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Eugene K M ChanM Ali Darendeliler
Oct 23, 2010·European Journal of Orthodontics·Hiroko HayashidaAmy L Counts
Apr 5, 2011·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Takahiro ShimomuraAmy L Counts

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Citations

Mar 4, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Zhi-Yu LiuRuo-Ping Jiang

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